package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.constant.RedisConstant;
import com.itheima.dao.SetmealDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.QueryPageBean;
import com.itheima.pojo.Setmeal;
import com.itheima.service.SetmealService;
import freemarker.template.Configuration;
import freemarker.template.Template;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
import redis.clients.jedis.JedisPool;


import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/*
体检套餐服务
 */
@Service(interfaceClass = SetmealService.class)
@Transactional
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealDao setmealDao;
    @Autowired
    private JedisPool jedisPool;
    @Autowired
    private FreeMarkerConfigurer freeMarkerConfigurer;
    @Value("${out_put_path}")
    private String outPutPath;//从属性文件中读取要生成的html对应的目录

    //新增套餐信息，同时需要关联检查组
    public void add(Setmeal setmeal, Integer[] checkgroupIds) {
        setmealDao.add(setmeal);
        Integer setmealId = setmeal.getId();
        this.setSetmealAndCheckGroup(setmealId,checkgroupIds);
        //将图片名称保存到redis中
        String fileName = setmeal.getImg();
        jedisPool.getResource().sadd(RedisConstant.SETMEAL_PIC_DB_RESOURCES,fileName);
        //当天价套餐后需要重新生成静态页面（套餐列表页面，套餐详情页面）
        generteMoblieStaticHtml();
    }
    //生成当前方法所需的静态页面
    public void generteMoblieStaticHtml(){
        //在生成静态页面之前需要查询数据
        List<Setmeal> list=setmealDao.findAll();
        //需要生成套餐列表静态页面
        generteMoblieSetmealListHtml(list);
        //需要生成套餐详情静态页面
        generteMoblieSetmealDetailHtml(list);
    }

    //生成套餐列表静态页面
    public void generteMoblieSetmealListHtml(List<Setmeal>list){
        Map map=new HashMap();
        map.put("setmealList",list);
        generteHtml("moblie-setmeal.ftl","m_setmeal.html",map);
    }

    //生成套餐详情静态页面
    public void generteMoblieSetmealDetailHtml(List<Setmeal>list){
        for (Setmeal setmeal : list) {
            Map map=new HashMap();
            map.put("setmeal",setmealDao.findById(setmeal.getId()));
            generteHtml("moblie-setmeal-detail.ftl","setmeal_detail_"+setmeal.getId()+".html",map);
        }
    }

    //用于生成静态页面
    public void generteHtml(String templateName,String htmlPageName,Map map){
        Configuration configuration = freeMarkerConfigurer.getConfiguration();//获得配置对象
        Writer out=null;
        try {
            Template template = configuration.getTemplate(templateName);
            out=new FileWriter(new File(outPutPath+"/"+htmlPageName));
            template.process(map,out);
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public PageResult pageQuery(QueryPageBean queryPageBean) {
        Integer currentPage = queryPageBean.getCurrentPage();
        Integer pageSize = queryPageBean.getPageSize();
        String queryString = queryPageBean.getQueryString();
        PageHelper.startPage(currentPage,pageSize);
        Page<Setmeal>page=setmealDao.findByCondition(queryString);
        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    public List<Setmeal> findAll() {
        return setmealDao.findAll();
    }

    @Override
    public Setmeal findById(int id) {
        return setmealDao.findById(id);
    }

    //设置套餐和检查组多对多关系，操作t_setmeal_checkgroup表
    public void setSetmealAndCheckGroup(Integer setmealId,Integer [] checkgroupIds){
        if (checkgroupIds != null && checkgroupIds.length > 0){
            for (Integer checkgroupId : checkgroupIds) {
                Map<String,Integer> map=new HashMap<>();
                map.put("setmealId",setmealId);
                map.put("checkgroupId",checkgroupId);
                setmealDao.setSetmealAndCheckGroup(map);
            }
        }
    }
}
